Steam boiler



sTEAM-BOILER Filed July 9, '1923 Patented Get. 29, 1929 u 'narran etarras rarest @FFME-'f GEORGE LASKER, OF CHICAGO, ILLINOIS lSTEAM Application led July 9,

My invention relates to improvements in water tube steam boilers, and'has for one of its objects the provision of battle means whereby the heated gases are directed over the tubes in a predetermined path.

Another object of my invention is to provide a three-drum boiler, the drums so arranged that feed water may be admitted into one of the drums and kept out of circulation a until the entire path of the heated gases has travelled through the boiler, thereby permitting the .use of foul feed water in the boiler, the solid matter of said foul feed water being precipitated within that 4part of the boiler located farthest away from the extreme heat.

The invention has among its other objects the production of a device of the 'kind described which is simple, convenient, compact, durable, reliable, efcient and satisfactory for '20V use wherever found applicable.

Many other objects Aand advantages of the construction herein shown and described will be obvious togthose skilled in the art from the disclosures herein given.

To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims.

The iigure illustrates a vertical section taken 4through a boiler of my improved lconstruction. l

V1 indicates the front wall of a boiler setting, 2 the rear wall, and 3 the Vertical lside walls thereof. 4 indicatesa bridge wall arranged intermediate the front and rear walls at the.

rear end of the grate 5. The customary fuel and ash doors and the likemay be provided' ing a front drum arranged at the upper front end of the boiler and 7 and v8 a pair of rear drums, the former being located at the bottom Arear end of the boiler and the latter arranged above the drum 7 Vat the rear end of the boiler' but at a level below the front drum 6. A

pair of banks of tubes 9 and 10, respectively,

connect the drums 6 and 7, 'and another bank of tubes 11 connects the 4drums 8 and 6.

BOILER 1923. Serial No. 650,516.v

It will be noted that the adjacent banks of tubesV are spaced apart a distance 'suiiicient to permit the entrance of a person therebetween for the purpose of inspecting, clean` ing, repairing, or otherwise. Doors or openings 12 are provided in the side walls of the setting to permit the entrance of a person therethrough into the space between the adjacent banks of tubes. Atthe rear of the setting intermediate the drums 7 and 8 is arranged a stack or flue 13 from which spent `gases are discharged.

The feed water is introduced by-a pipe14 into the drum 8, said drum being arranged at the coolest part of the boilerv so'that the solids contained in said feed water may precipitate slowlytothe bottom of the drum v and drain off, if desired, through the pipe 15.

In order to direct the heated gases' arising from the fuel bedover the banksof tubes inV .a predetermined path, suitable baiiles are provided. The baiile 17 ext-ends from the bridge wall 4 along the bottom of thetubes 9 toward the front of the boiler.` yThe baliie`18 is ar-` ranged on thetop of the bank of tubes` 9, extending from the front drum to adjacent' the drum 7. The baille 19 is arranged on top of the bank of tubes 10 and extends from the drum 7 to adjacent the front drum. The top wall 20 of the boiler setting forms substantially a battle 'above the bank of tubes 11, the heated gases passing through the boiler along the tubes in the direction indicated by the arrows in the drawing. f

A drain 16 is shown for draining the drum,

or, in other words, there are more" tubes in.

the bank 9 than in the bank 10,'and there y water in the tubes.

are more tubes in the bank l0 thanfin the bank 11.

The battles are so arranged that the heated gases pass along the tubes in a direction reverse to that in which the greatest proportion of water iows inthe tubes, as for example, in

the lowest bank the path of the-water will be from the drum 7 to the drum 6 and the gases broughtfint-o contact with the heated gases.

until'they are ready to be dischargedthrough the flue 13. This section of the boiler acts an economizer directly connected and open-VV ing into the other drums andlarrangedso that substantially all of the solid; matter in the water inithe drum 8. will be precipitated' tov the bottom of said drum. The feed water from the drum VSwill flow from the drum 8 at the rate it is supplied thereto.

Having thus described my invention, it is obvious that variousv immaterial modiicai by Letters'Paten't is: 40A

tions maybe .made inthe same lwithout de*7 parting from` the spirit of my invention; hence I'rdo-no't wish lto be understoodias limiti'ng Ymyself-'to the exact form, construction,

arrangement and combination of `parts herein shown and described or uses mentioned.

VWhat I claim as new anddesir'esto secure '1; In a device ot' the kindfl described and in combination, a boiler having afront drum, a

pair of rear drums atdifferent elevations below'sa-idu` front drum, said-'rear `drumsfbeingV spacedfrom each other to-perm-itthe passage of gases of combustion therebetween, banks Y oftubes directly connecting the frontV drum with the' rear f drums, means for introducing feed waterinto the .upper of said rear drums,

" and baiiles for directingfthe gasesA overisaidv Atubes. and between said rear drums inapredetermined manner.

2. In adevice of the kinddescribedand in combination, abolerhaving'a front drum, a

pair of rear drums at different-.elevations .be- 'i low said,` front drum, saidzrear l'drums being spaced from each other to permit the passage v y of gasesof; combustion therebetween, banks.-vr of tubesldirectly` connectingr the fronti drum` with the rear drums, a-lue intermediate saidrear drums,me ans forintroducing feed water into the upper otsayid grear drums, and batlies for; directingl the gases overk said tubes inf a predeterminedmanner and into said flue so v that saidgases contact with the. top Vbank of said upper drum just prior to their discharge through the said flue. Y

3. In a. device of the kind described and in combination, a boiler having a front drum, a

pair of rear drums at dide'rent elevations be- Vdrum with said front drum, means for introducing feed water into said upper rear drum, abaffle extending along .the ,bottom of the lowest bankl of: tubes fromy thel bridge Iwall toward the front of .saidi enclosure, azbaH; en top of saidl lowest bank ofy tubesy from thev trent to adjacent the rear end, andf a baiei. on top ofi the middle bankoftzubes trom-said rear drumA to adjacent the front end.' ofi' saidY tubes to direct the heated gases oven saidv tubes in a predetermined manner.y

4. In adevicefof the kinddescribedandin combination, a boiler having a front drum, a. pair ot' rear drums at different elevations be low saidv front drum, said; rear drumsrbeing.

, spaced tromeach other to permit th'epasjsageM of gases. of combustion therebetween, a plurality or banks oftubes directly connecting the front drum with the lower. rearJ dr-um,av bank oftubes directly connecting'thefrontv drum with theupper portion oftheaupper rear drum, means for introducingfeed water-5 into the upper rearv drumiandiibaiiiesfor directing the gases overvsaidtubes andi-between said rear drumsso that said gases contactjwith the top'bank and? the upper `rear` drum just prior tov their discharge from'the boiler.

5. In adevice ofthe kinddescribed'andinv combination, a boiler having a- 4front drum, a pair of rear drums at different elevations below said front drum, saidrear-drumslbeing spaced from each other to permit the passage of the hot gases of combustion there- Y between, a plurality of banks of tubes directly connecting the front, drum with thelowerrear drum, a bank of tubesdirectly connecte ing the front drum with theupperportion-of theupper rear drum, means for-introducing feed water into said upper rear drum, an en= 1 closure for said drunis having a-brid'gewalldisposed intermediate said' front' and rear drum, a bail'e disposed along the lowermost bank of tubes and extending from said'bridge wall' to a point adjacent the frontwall ,a

second bafli'e extending'kfrom the front drum,l to a-pointadj acentthe llower -rear drum, :said second baille being disposed intermediate saidA plurality of banks.` offtubes connecting said frontdrum with said lower rear. drum, anda! third lbattle extending from the., lower.. rear.4

12sY j drum to a point adjacent the front drum, said third battle being disposed beneath said bank of tubes connecting the front drum with the upper rear drum.

6. In a device of the class described and in combination, a boiler having a pair of rear drums arranged in spaced vertical alignment, a front drum arranged in a horizontal plane above the rear drums and in a vertical plane spaced from that of the rear drums, inclined tubes forming communication between said drums, a gas outlet disposed in a plane between said rear drums and means for directing the gases over said tubes in a predetermined manner.

7 In a device of the class described and in combination, a boiler having a pair of reai` drums arranged in spaced vertical alignment, a front drum arranged yin a horizontal plane above the rear drums and in a vertical plane spaced from that of the rear drums, two series of tubes vertically spaced from each other and connecting said front drum with the lower of said rear drums, tubes connecting the upper of said rear drums with said front drum., battles for directing the gases over said tubes in a predetermined manner, one of said battles being disposed between the two series of tubes communicating with the lower of said rear drums, and a gas outlet disposed in a plane between said rear drums.

In testimony whereof, I have hereunto signed my name. e

GEORGE LASKER. 

